Abstract
A highly efficient oil-degrading bacteria JZX-01 was isolated from the oil-contaminated soil of the seacoast near the Boxi Offshore Oil Field of China. Morphological, physiological, and 16S rDNA gene sequence analyses indicated that JZX-01 was assigned to the genus Rhodococcus sp. This strain decomposed 65.27 ± 5.63 % of the crude oil in 9 days. Gas chromatography–mass spectrometry analysis showed that even the long-chain hydrocarbons (C31–C38) and branched alkanes (pristine and phytane), which were regarded as the stubborn ones, could be degraded. Further study showed that the bacteria still has good oil degradation ability at low temperatures as well as under high salt conditions. Moreover, JZX-01 was found to have a biosurfactant-producing capacity, which significantly favors the surface tension reduction and crude oil degradation. The promising isolated strain Rhodococcus sp. JZX-01 could be further used for the bioremediation of oil-polluted soil or seawater in a wide range of temperatures and high salt conditions.
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Acknowledgments
The authors wish to acknowledge the financial support provided by the National Key Basic Research Program of China (No. 2014CB745100), the National Natural Science Foundation of China (No. 20906070), the Seed Foundation of Tianjin University and the Program of Introducing Talents of Discipline to Universities (No. B06006).
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Chen Li and Zheng-Xi Zhou contributed equally to this work.
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Li, C., Zhou, ZX., Jia, XQ. et al. Biodegradation of Crude Oil by a Newly Isolated Strain Rhodococcus sp. JZX-01. Appl Biochem Biotechnol 171, 1715–1725 (2013). https://doi.org/10.1007/s12010-013-0451-4
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DOI: https://doi.org/10.1007/s12010-013-0451-4